Improvement in metallic roofs



G. F. ULLMA'NN.

Metallic Roofs.

Patented Aug. 4,1874.

4 wi'messes.

UNITED STATES PATENT OEFIE.

GEORGE F. ULLMANN, OF BROOKLYN, NEW YORK.

IMPROVEMENT-IN METALLIC ROOFS.

Specification forming part of Letters Patent N0. 153,864, dated August 4, 1874 application led July 3, 1874.

To all whom it may concern:

.Be it known that I, GEORGE F. ULLMANN, of Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in Fastening Sheet Metal on Boards for Roofing and other Purposes, of which the following is a. speciication:

This invention is illustrated in the accompanyin g drawing, in which Figure 1 represents a plan or top view. Fig. 2 is a vertical section of the same. Fig. 3 is a similar section on a larger scale than the previous Egures.

Similar letters indicate corresponding parts.

This invention consists in the combination of angular-slotted retaining-pieces with metal sheets, the edges of which are turned over backing-pieces of wood, and with the wooden surface to which `said metal sheets are to be attached, in such a manner that the upright langes of the slotted retaining-pieces can be readily soldered between the adjoining edges of the metal sheets, while the horizontal flanges of said retaining-pieces are secured to the surface of the boards to which the sheetmetal is to be attached, and thereby the supporting-boards are.left free to expand or contract without disturbing the seams of the sheet-metal covering.

In the drawing, the letter A designates a layer of boards-such, for instance, as the covering of a roof, or any other layer 'of -boards which is to be covered with sheet ness to the height of the ianges or rims of the trays. For the purpose of fastening the sheets a, together with their backing-board b, down upon the layer A, I use retainingpieces B, made of strips of sheet metal, which are bent at right an gies, so that each will form an upright ange, c, and a horizontal flange, d, Fig. 3. The horizontal flanges d of the angular retaining-pieces are provided with slots e, Fig. 1, and screws f, which pass th rough these slots, serve to fasten the retaining-pieces down upon the layer A. The retaining-pieces O are distributed over the layerA in such position that their upright flanges c will extend up between the joints of the adjacent trays or sheets a, and after these trays have been adjusted in the proper positions they are connected to each other and to the upright flan ges of the retaining-pieces by solder. The screws f, which pass through the slots of the retaining-pieces, are not drawn up perfectly tight, so that said retaining-pieces can move under the screws in the direction of the length of the slots e, and consequently the layer A is free to expand or to contract without producing any injurious effect on the seams of the covering-sheets a. v

This invention is applicable to roofs and also to other devices where it is desirable to secure a lining of sheet metal to a supportinglayer of boards. y

What I claim as new, and desire to secure by Letters Patent, is-

The combination of slotted retaining-pieces B with metal sheets a, backing-board b, and a supporting-layer, A, substantially in the manner herein shown and described.

In testimony that I claim the foregoing I have hereunto set my hand.

GEORGE F. ULLMANN.

Witnesses W. HAUTE, E. F. KASTENHUBER.

EL. s] 

